Home / 354,821.88-489,581.10-203,889.72

Finding the Fourth Proportional to 354,821.88, 489,581.10 and 203,889.72

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Solution

The fourth proportional to 354,821.88, 489,581.10 and 203,889.72 is: 281,325.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,821.88 : 489,581.10 = 203,889.72 : x
  2. Step 2: Convert to fraction form
    354,821.88/489,581.10 = 203,889.72/x
  3. Step 3: Cross multiply
    354,821.88x = 489,581.10 × 203,889.72
  4. Step 4: Simplify right side
    354,821.88x = 99,820,553,396.29
  5. Step 5: Solve for x
    x = 99,820,553,396.29/354,821.88
  6. Step 6: Final answer
    x = 281,325.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.